package com.atguigu.gmall.realtime.app.func;

import com.alibaba.fastjson.JSONObject;
import com.atguigu.gmall.realtime.common.GmallConfig;
import com.atguigu.gmall.realtime.utils.DimUtil;
import org.apache.commons.lang3.StringUtils;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.functions.sink.RichSinkFunction;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Collection;
import java.util.Set;

/**
 * Author: Felix
 * Date: 2021/9/17
 * Desc: 维度数据写到Phoenix的函数类
 */
public class DimSink extends RichSinkFunction<JSONObject> {
    private Connection conn;
    @Override
    public void open(Configuration parameters) throws Exception {
        //注册驱动
        Class.forName("org.apache.phoenix.jdbc.PhoenixDriver");
        //获取连接
        conn = DriverManager.getConnection(GmallConfig.PHOENIX_SERVER);
    }

    @Override
    public void invoke(JSONObject jsonObj, Context context) throws Exception {

        //获取输出维度表名
        String tableName = jsonObj.getString("sink_table");

        PreparedStatement ps = null;
        try {
            //拼接SQL
            String upsertSQL = genUpsertSql(tableName,jsonObj.getJSONObject("data"));
            System.out.println("向Phoenix中插入数据的SQL：" + upsertSQL);
            //获取数据库操作对象
            ps = conn.prepareStatement(upsertSQL);
            //执行SQL
            ps.execute();
            //注意：phoenix默认事务不是自动提交的   需要手动提交事务
            conn.commit();
        } catch (SQLException e) {
            e.printStackTrace();
            throw new RuntimeException("向Phoenix中插入数据失败~~");
        } finally {
            //释放资源
            if(ps != null){
                ps.close();
            }
        }

        //判断是否对维度数据  进行了修改
        if(jsonObj.getString("type").equals("update")||jsonObj.getString("type").equals("delete")){
            DimUtil.deleteCached(tableName,jsonObj.getJSONObject("data").getString("id"));
        }
    }

    //拼接向Phoenix中插入数据的sql语句
    private String genUpsertSql(String tableName, JSONObject dataJsonObj) {
        Set<String> keys = dataJsonObj.keySet();
        Collection<Object> values = dataJsonObj.values();

        String upsertSql = "upsert into "+GmallConfig.HBASE_SCHEMA+"."+tableName+
            "("+ StringUtils.join(keys,",") +") " +
            " values" +
            "('"+StringUtils.join(values,"','")+"')";
        return upsertSql;
    }
}
